Power-brake.



PATENTBD AUG.; 1905.

1,. PmGsT. i POWER BRAKE.

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PATENTE) AUG'. 1, 1905.

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UNITED STATES PATENT OEEICE.

LOUIS PFINGST, or BOSTON, MASSACHUSETTS, ASSIGNOR', BY MESNE ASSIGNMENTS, To PEI-Nesi? ELECTRIC MANUFACTURINGr COMPANY, oF KITTERY, MAINE, A CORPORATION or MAINE.

POWER-BRAKE.

Specification of Letters Patent.

Patented Aug. 1, 1905.

Application filed OctoberZlL, 1904. Serial No. 229,848.

My invention relates to improvements in automatic power-brakes, and especially to brakes which are applied by power from an electric motor transmitting its power to the chain-windlngspindle of vehicles or cars, and is in the nature of an Improvement on the power-brake shown and described in my application, tiled July 13. 1904, SerialNo. 216,339. The object of my invention is to control the current iowing to the motor as well as to control tbe clutch interposed between the motor or shaft and the chain-winding spindle.

Anotherobject is to produce mechanism for normally holding the clutch members out of engagement and also to control the circuitcloser and also to automatically cause the closing of the electric circuit and the engagement of the clutch members. These and other objects are accomplished by mechanism hereinafter described and shown. l Miy invention consists of certain novel features hereinafter described, and particularly pointed out in the claims. ,f In the accompanying drawings, which illusl .trate a construction embodying my invention,

Figure 1 is an elevation, partly in section, of the lower part of the motor `and the chainwinding spindle, showing the lever mechanism which 'operates the electric circuit and the clutch members. Fig.- 2' is a horizontal cross-section on the line X X, Fig. 1, and looking in the direction indicated by the arrow. Fig. 3 is a detail view, partly in section, of the lever mechanism hereinafter described. Fig. 4 is a detail viewin section oi' the brake-handle and chain-winding brake-spindle and motor armature-shaft. Fig. 4' is a detail sectional view through the knob of the handle and the link and lever which are pivoted thereon. Fig. 5 is a detailview of part of the footlever mechanism, showing the magnetic solenoid-circuit closer. Fig. 6 is a similar view showing the solenoid-circuit closed.` Fig. 7 is a top plan View of the foot-lever mechanism. Fig. 8 is a diagrammatic View illustrating the solenoid-circuits for one or two cars. Fig.

9 is a diagrammatic view illustrating the motor-circuit for one or two cars.

Like letters of reference refer to like parts throughout the several views.

To the buffer-timber A there is secured the bed-plate A, and secured to the bed-plate A by vsuitable bolts A2 is the motor frame or support B.

Band B2 are brackets forming a support for the lever-fulcrum at B5.

B3 is an opening formed in the base-framel or motor-support to admit the levers B2'and .O Jfor the operation ofthe clutch mechanism and the making and breaking f the electric circuit.

On the bed-plate A there is provided at its Y center the boss A2 'to form a guide or bearing for the lower end of the motor journal-shaft A4, and adjacent there is also a bearing A5 to support and guide the brake-spindle A6.

A-7 represents ribs formed on the top side of the bed-plate A, connecting with the boss A3. C C' are suitable openings in the'base-plate and platform-buffer to admit the electric conductors C2 C2. The bolts A2 secure the motor-frame B, bedplate A, and platform-buffer A together.

D D are rivets passing through the motorframe and the insulating-pieces D2 D3 to hold fast the contact-platesD4 D, to which are connected the wires C2 C4.

E is a projection on the base-frame, forming a housing E for the gear H2, fast on the brake-spindle shaft A6.

The motor-frame F is supported on the baseframe B, as shown, and held in place by the bolts F', which extend into thepole-pieces F2 and hold same in an assembled position.

Gr isa motor-armature with extended shaft lever B4, and HG is the short end, bifurcated and bridged on its under side by the piece H7.

The lever BA1 is fulcruxned on the pin B5, and said pin is supported by the brackets B' and B2.

J is an extension-arm pivoted loosely on the pin B5 and resting on the bridging-piece H7 and passing between the bifurcated arms Hi. The arm J at or near its center separates, forming two arms K K', which unite again at the rear with the projecting piece K2, to which the insulating-bars K3 are attached. These bars K3 prevent the current from running into the other parts of ,the apparatus when the contact-linger L is in contact with the'plates DA1 D5. The finger L is attached to the insulatingbars K3, and at the centers of said double arm there are holes which permit the tapped bolts M to pass through and be secured into oppositesides of the clutch-ring H4, thereby forming a pair of rtrunnions, so that the clutch member H' can be brought into contact with the clutch member H.

On the spindle AG and attached thereto there is a ratchet-wheel N, and resting on the bedplate A and 'cooperating with said ratchetwheel N is a pawl N', pivoted on the pin N2. This pawl N' rests on the flange N3 of the base-frame A. The gear Hmeshes with the pinion H2, from which the power of the motor is transmitted to the chain-winding spindle AG when the clutch members are connected and the circuit closed.

The lower lever O is pivoted at its rear end to brackets on the base-plate A, and near its rear end at P'L there is pivoted thereto the link P, pivoted at its upper end on the arm J at P', forming a fulcrum on the lever O.

The springv P2 has its upper end connected to the bracket P3 and its lower end to the piece K2 of the arm J, and the object of this spring is to eXerta pull on the rear end ot' the arm J to raise the contact-inger L and close the circuit between the contact-pieces D4 D5 and at the same time to raise the clutch member H' into liXed engagement with the driving clutch member H.

Located in the buffer-timber A' is a magnetic solenoid Q, with which cooperates the solenoid-core Q', pivoted on the underside of the lever O. The lever O may be operated by the foot of the operator holding it down or by the magnetic influence of the solenoid, and in either case the clutches are held out of engagement and the motor-circuit cut out with the parts in the position shown in Fig. 1.

On the lever O there is pivoted the lever R at R2 and having a tread R', which extends on each side of said pivot R2. The purpose of the lever R is to act as a circuit-closing lever when the operator places his foot on the inner part of the tread beyond the pivot R2 and by this pressure closes the switch R3, which will permit the current to iiow through the wire Rlfrom the source of supply, through .each end of the cars in the train.

the bolt R5, (suitably insulated from the link P, shown in Fig. 3,) and the current then flows to the insulated part R of the lever R, thence through the bolt R7 (suitably insulated from the link P) and out through the wire R to themagnetic solenoid Q, and from the magnetic solenoid out through the wire R to the ground. This solenoid when energized pulls down the solenoid-core Q', operating the lever O, thus pulling on the link P, which will act on the arm J, disengaging the clutch members H H' and cutting out the motor-circuit between the contact members l)" l)"', which operation will release the brakes by the brakespring pull.

It will be understood that without the magnetic solenoid energizing the solenoid Q, the operator can set or release the brakes on a single car in the following manner: '.l `o release the brakes, the operator presses on the outer part of the tread R' of the lever R, which will come in contact with the lever (Y), which will act on the links P and pull down the arm J, thus disengaging the clutch members and breaking the circuit and releasing the brakes. To set the brakes, the operator releases the pressure on the inner part of the tread R', which releases the pressure ou the lever links P, and the arm J, which will bring the linger L into contact with the contact-plate D, thereby closing the circuit, and the motor will rotate before the clutches become engaged. A further release of the pressure will permit the spring P to cause the engagement of the clutch members H H', when the rotation of the motor will be communicated to the chain-winding spindle A6 by the mechanism previously described.

ln the diagrammatic views, Figs. 8 and 9, there are shown a plurality of magnetic solenoids and motors in circuit lor train service, and the constructions shown in Figs. l to 7 are embodied in the braking apparatus on 'l`o operate the two motors on one car or more in the train, the switch R3 is operated as previously described by the operator to close the circuit through the magnetic solenoids Q, and the current passes by the wires R" to the ground. rPhe continuation of the circuit to the next car is through the wire R10 and coupling connection S, thence to the next car connected with the wires R8 and R10, through the magnetic solenoids, and thence to the wires R" to the ground. In this manner the operation ol' the apparatus by the operator at the head of or on any carin the train applies or releases the brakes through the entire train by means of the electromagnetic circuit in a manner similar to that previously described for one car-- that is, by closing the motor-circuit and eugaging the clutch members, and vice versa. Instead of taking the current from the trolleywire it can be taken from the third rail, the trolley-wire and third rail being marked, re-

^ spectively, TW and TR, or may be taken from any other source.

In the diagrammatic View Fig. 9 the wiring of the motor-circuit is illustrated for one or a pluralityof cars. The current entering through C2 from the trolley-wire or third rail will pass lto the motor when the circuit-closer L is closed, as hereinbefore described, and from the motor out to the lground through the wire C3. Part of the circuit passes through the wire U and enters the motor through the wire U and then passes to the ground through the wire C3, thus operating both motors on the same car. If there is a train of cars-say two-part of the current just described passes 'by the coupling U2 tothe wire U of the next car, down through the wire U into the motor,

and from the motor to the ground through the wire C3. At the same time part of the current passes by the wire Uto lthe wire U and then to the motor on the opposite end of the second car and out to the ground through the wire C3. In this'manner the motor-circuit operates as one throughout the train. By deenergizing the magnetic solenoid-circuits of the train, the motor-circuits are closed and the clutch-members are engaged by the pull of the spring P2. By this arrangement the brakes on all'of the cars will beset simultaneously. To release the brakes, the magnetic solenoid-circuit is energized, which'will `pull on the lever O, thence on the links P,l

arm Jyand break the motor-circuit'and disengage the clutch members throughout the train.

Figs. 8 and 9 show a plurality of solenoids,`

' y become inoperative, the operator can place his foot on the outer end of the tread It', which will answer, the same purpose-that is, break the magnetic solenoid-circuit Aby lifting the inner en d of the lever R, which, as previously described, takes place when it is desired to apply ,the brakes.

vOn the upper end of the chain-winding brake-spindle A (see Figs. land 42) there is located a brake-handle V, in which the upper end of the brake-spindle is free to revolve, so that the spindles can-rotate freely without rotating the handles, and when it is desired the handles can be engaged with the spindles.` This arrangement is carried out by the lever V2 being held upward by the link V3, which arrangement holds the pin V out of engagement with the oriicesVof the hub V2 of the spindle A6. In order to allow the handle V to engage the spindle A, the operator swingsv the link V3 outwardly and up overthe knob of the handle resting on the top of the handle V. When this link is thrownl as described, the spring V6 forces the lever V2 downwardly, causing the pin V to enter into engagement with one of -the oriices Vi of the hub V5 of the spindle A". The spring V6 acts to hold the pin Vl when it'is engaged with the hub V2 is pivoted, on the bracket V7.

vThe lever B4 is an auxiliary lever which may be used to close the circuit and engage the clutches in case the spring P2 should become inoperative. It also acts as a lock for the lever mechanism on either end of the car when not in use and can be moved to the pos ition shown in dotted lines, Fig. l, and held by the catch T and prevents the closing of the circuit or the engagement of the clutch members. Ihe advantage of this mechanism is that so that in case of accident to the motorman or in case he should desert his car for-any reason the brakes will be automatically set.

- The magnetic solenoid-circuit switches or circuit can be operated on any of the cars in the train to operate the motor-circuits and to engage the clutch mechanism to apply the brakes, as appears 'from the description. magnetic solenoid-circuit canv be operated on any'car in the train by operating the leverR to'close the switch R3, which will break the motor-circuits and disengage the clutch members throughout the train to release the brakes, as fully disclosed lin the specification.

ing the same', what I claim as new, and desire to1 secure by Letters Patent of the United States, is-

l. In an apparatus of the character described,a motor-clutch and gear-driven brake- A' spindle, an electric motor, a rotatable electricmature-shaft for rotating said spindle.

2. In an apparatus of the character described,a motor-clutch and gear-driven brakespindle, an electric motor, arotatable electricmotor armature-shaft, and automatic means for engaging the clutch mechanism to transmit power from said rotating armature-shaft for rotating said spindle.

' 3. In an apparatus of the character de'- scribed, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, and automatic means for engaging Said clutch mechanism and for transmitting power fromsaid'rotating armature-shaft and for rotating said spindle.

` 4. In an apparatus of the character described, a chain-winding brake-spindle,an electric motor, a rotatable motor armature-shaft,

cuit to apply the brakes.

V2 whenoperating with the handle. This lever it forms an automatic brake-setting appliance,

current-controllers on the cars in the train-- The 'Having thus described the nature of myin. vention and set forth a construction embodymotor armature-shaft, and automatic meansl for transmitting power from sald rotatlng arand automatic means for closing the motor-ciI-,

5. In an apparatus of' the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armature-shaft, and automatic means for closing the circuit to transmit power from said rotating armatureshaft to said spindle.

6. In an apparatus of the character described, a chain-winding brake-spindle,an electric motor, a rotatable motor armature-shaft, clutch mechanism for engaging said spindle and armature-shaft, and automatic means for .closing the circuit through the motor and actuating said clutch mechanism to apply the brakes.

7. In an apparatus of the character dei scribed,a chain-winding brake-spindle,an electric motor, a rotatable motor armature-shaft, and automatic means for closing the motor-circuit to apply the brakes, and means for preventi ng the operation of said automatic means.

8. In an apparatus of the character described achain-winding brake-spindle,an electric motor, a rotatable motoi armature-shaft, automatic means for closing the circuit to transmit power from said rotating armatureshaft to said spindle, and means for preventing the operation of said automatic means.

9. In an apparatus of the character described,achain-windingbrake-spindle,an electric motor, a rotatable motor armature-shaft, automatic means for closing the motor-circuit to apply the brakes, and a lever for normally preventing the operation of said automatic means.

10. In an apparatus of the character described,a chain-winding brake-spind le', an electric motor` a rotatable motor armature-shaft, automatic means for closing the motor-circuit tov apply the brakes, a lever for normally preventing the operation of said automatic means, and a magnetic solenoid adapted to control the movements of said lever.

11. In an apparatus of the character described,a chain-windingbrake-spindle,an electric motor, a rotatable motor armature-shaft, automatic means for closing the motor-circuit to apply the brakes, and auxiliary means for closing the circuit to apply the brakes.

12. In an apparatus of the character described,achain.winding brakespindle,an electric motor, a rotatable motorarmature-shaft, clutch mechanism for engaging said spindle and `armature-shaft, automatic means for closing' the circuitthrough the motor and actuating said clutch mechanism to apply the brakes, and auxiliary means for closing the circuit andengaging the clutch mechanism for applying the brakes.

13. 'In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, automatic means for closing the motorcireuit to apply the brakes, and a magnetic solenoid adapted to control said automatic 14. In an apparatus of the character described, a chain-winding brake-spindle. an electric motor, a rotatable motor armatureshai't, automatic means for closing the motorcircuit to apply the brakes, and an electric circuit for controlling said automatic means.

15. In an apparatus ot' the character described, a plurality of chain-winding brakespindles, a plurality of electric motors, a plnrality of electric-motor armature-shafts, antomatic means for closing the motor-circuits to apply the brakes, and an electric circuit for controlling said automatic means.

16. In an apparatus of the character described, a plurality ol chain-wimling brakespindles, a plurality of electric motors, a plurality of electric-motor armature-shafts, automatic means for closing the motor-circuits to apply the brakes, and an electromagnetic solenoid-circuit for controlling said automatic means.

17. In an apparatus of the character dcscribed, a plurality oi. chain-winding brakespindles, aplurality of electric motors, aplnrality of rotatable electric-motor armatureshat'ts, a plurality of clutch mechanisms for transmitting` power from said motors to said spindles, automatic means for closing` the motor-circuits to apply the brakes, and an electric circuit for operating said clutch mechanisms.

18. In an apparatus of the character described, a plurality of chain-winding` brake- Spindles, a plurality of electric motors, a plnrality of rotatable electric-motor armatureshafts, a plurality ot' clutch mechanisn'is for transmitting power from said motors to said spindles, automatic means for closing` the motor-circuits to apply the brakes, and an electric circuit for operating' said clutch 1nechanisms and said automatic means.

19. In an apparatus of the character described, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, automatic means Afor transmitting power .from said rotating armature-shaft for rotating said spindle, and an auxiliary lever independent oi said automatic means for closing the motor-circuit.

20. In an apparatus of the character described, a m otor-clutch and gear-d ri ven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, automatic means for transmitting power from said rotating armature-shaft for rotating said spindle, and an auxiliary lever independent of said automatic means for closing said motor-circuit and engaging the clutches.

21. In an apparatus ot' the character dcseribed, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, automatic means for transmitting power from said rotating armature-shaft it'or rotating said spindle, and an auxiliary lever independent of said automatic means for closing said motor-circuit and the clutches and adapted to .be moved into posi- Y tion to lock said automatic means against movement.

22. In an apparatus ofthe character described, amotor-clutchand gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft,automatic means for power from said rotating armature-shaft for rotating said spindle, and a brake-handle capable of engagement with and disengagement from said spindle.

24. In an apparatus of the charactendescribed, amotor-clutch and gear-driven brakespindle, an electric motor, arotatable electric-V t motor armature-shaft, automatic means for engaging said clutch mechanism andfor trans-` mitting power from said rotating armature-v shaft and forrrotating said spindle, and a' brake-handle capableof engagement with and disengagement from said spindle.

25. In an apparatus ofthe character described, a chain-winding brake-spindle, an

electric motor, a rotatable motor armature-` shaft, automatic means for closing the motorcircuit to apply the brakes, and abrake-handle capable of engagement with and disengage ment from said spindle.

26. In an apparatus of the character described, a chain-winding brake-spindle, an

velectric motor, a rotatable motor armatureshaft, automatic means for closing'the-circuit to transmit power from said rotating arma-V ture-shaft to said spindle, and a brake-handle a capable of engagement with and disengage-` ment from Said spindle. f A

27. In an apparatusof the character described, a chain-winding'brake-spindle, an

electric motor, a rotatable motor armature-` shaft, clutch mechanlsm for engagingA said spindle and armature-shaft, automatic means for closing the circuit through the motor and actuating said clutch mechanism to apply the brakes, and a brake-handle 'capable' of engagement with and disengagement from 'said spindle.

28. In an apparatus of the character described, a chain-winding brake-spindle, an electricmotor, a rotatable motor armatureshaft, automatic means for closing the motorv circuit to apply the brakes, means for preventing the operation of said automatic means,

and a brake-handle capable of engagement with and disengagementfrom said spindle.

29. In an apparatus of the character described, a chain-Winding brake-spindle, an

electric motor, a rotatable motor armatureshaft, automatic means for closing the circuit to transmit .power from said rotating armature-shaft to vsaid spindle, meansfor preventing the operation of said automatic means, and a brake-handlel capable of engagement with and disengagement from said spindle.

30. In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, automatic means for closing the motorcircuit to apply the brakes, a lever for normally preventing the operation of said automatic means, and a brake-handle capable of engagement with and disengagement from said spindle.

31. In an apparatus of the character describeoL'a chain-winding brake-spindle, an electricy motor, a rotatable motor armature'- circuity to apply the brakes, a lever 4for normally preventing the operation of said'automatic means, a magnetic solenoid adapted to control the' movements of said lever', and a brake-handle capable of engagement with and disengagement from said spindle.

p82. In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, automatic means for' closing the motorcircuit to apply the brakes, auxiliary means and a brake-handle capable of engagement with and disengagement from saidv spindle.

33.'r In an apparatus of the character ole-v scribed, a chain-winding' brake-spindle, an *electric motor, a rotatable motor armatureshaft, clutch mechanism for engaging said spindle and armature-shaft, automatic means for closing thecircuit through the motor and actuating said clutch mechanism to apply the brak-es, auxiliary means for closing the circuit, and engaging the clutch mechanism for applying the brakes, and a brake-handle capable of engagement with and disengagement from said spindle. 34. Inl an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, automatic vmeans for closing the motorcircuit to apply-the brakes, a magnetic 'solenoid adapted to control said automatic.- means, and la brake-handle capable of engagement. \with' and disengagement from said spindle. v

35. In an apparatus 'of the character de` scribed', a chain-winding brake-spindle, an electric motor, a rotatable motor armature1 shaft, automatic means forclosing the motor circuit to apply the brakes, an electric circuit, for controlling said automatic means, and a brake-handle capable of engagement with and disengagement from said spindle..

36. In an apparatus of the character described, a plurality of chain-'winding brake'- spindles,v a plurality of electric motors, a plu.

shaft, automatic means for closing the motorf for closing the circuit to applythe brakes,

,rality of electric-motor armature-shafts, au-

tomatic means for closing the motor-circuits to apply the brakes, an electric circuit for controlling said automatic means, and a brakehandle capable oi' engagement with and disengagement from each of said spindles.

37. In an apparatus of the character described, a plurality of chain-winding brakespindles, a plurality of electric motors, a plurality of electric-motor armature-shafts, automatic means for closing the motor-circuits to apply the brakes, an electric magnetic solenoidcircuit for controlling said automatic means, and a brake-handle capable of engagement with and disengagement from each of said spindles.

38. In an apparatus of the character described, a plurality of chain-winding brakespindles, a plurality of electric motors, a plurality of rotatable electric-motor armatureshafts, a plurality of clutch mechanisms for transmitting power from said motors to said spindles, automatic means for closing the motor-circuits to apply the brakes, an electric circuit for controlling said clutch mechanisms, and a brake-handle capable of engagement with and disengagement from each of said spindles.

39. In an apparatus of the character described, a plurality of chain-winding brakespindles, a plurality of electric motors, a plurality of rotatable electric-motor armatureshafts, a plurality of clutch mechanisms for transmitting power from said motors to said spindles, automatic means for closing the motor-circuits to apply the brakes, an electric circuit for operating said clutch mechanisms and said automatic means, and a brake-handle capable of engagement with and disengagement from each of said spindles.

40. In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, and means for closing the motor-circuit to apply the brakes, brake-handle capable of engagement with and disengagement from said spindle, and means for normally preventing tbe engagement of said handle and said spindle.

41. In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, means for closing the motor-circuit to apply the brakes, a brake-handle capable of 4engagement with and disengagement from said spindle, means for normally preventing the engagement of said handle and said spindle, and means for holding said handle in engagement with said spindle upon the engagement of said handle with said spindle.

42. In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, means for closing the motor-circuit to apply the brakes, a brake-handle capable of engagement with and disengagement troni said spindle, means for normally preventing the engagement of said handle and said spindle, and yielding means for holding said handle in engagement with said spindle upon the engagement oi' said handle with said spindle.

48. In an apparatus of the character described, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, automatic means for closing the motor-circuit to rotate said armature-shaft, and automatic means for transmit.- ting power from said armature-shaft to said brake-spindle for rotating said spindle.

44. In an apparatus ot' the character described, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, means for closing the motor-circuit to rotate said armature-shalt, and automatic means for transmitting power from said armature-shaft to said brake-spi ndle for rotating said spindle.

45. In an apparatus of the character described, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatableelcctricmotor armature-shaft, automatic means for closing the motor-circuit to rotate said armature-shaft, and means for transmitting power from said armature-shaft to said brake-spi ndle for rotating said spindle.

46. In an apparatus oi? the character described, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, clutch mechanism for transmitting power from said motor to said spindle, automatic means for closing the niotor-circuit, and automatic means for engaging said clutch mechanism to transmit power from said motor to said brake-spindle.

47. In an apparatus of the character described, a motor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, clutch mechanism for transmitting power from said motor to said spindle, means for closing the motor-circuit, and automatic means for engaging said clutch mechanism to transmit power from sai d motor to said brake-spindle.

48. In an apparatus of the character described, amotor-clutch and gear-driven brakespindle, an electric motor, a rotatable electricmotor armature-shaft, clutch mechanism for transmitting power from said motor to said spindle, automatic means for closing the motor-circuit, and means for engaging said clutch mechanism to transmit power from said motor to said brake-spindle.

49. In an apparatus of the character described, a chain-winding brake-spindle, an electric motor, a rotatable motor armatureshaft, automatic means for closing the motorcircuit to rotate said armature-shaft, and au tomatic means for transmitting power from said armature-shaft to said spindle.

50. In an apparatus of the character deelectric motor, a rotatable motor .armatureshaft, automatic means for closing the motorcircuit to rotate said armature shaft, and

means for transmitting power from said armature-shaft to said spindle.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 10th day of October, A. D. 1904.

'- Louis PFINGST.

Witnesses: A. L. MESSER, A. R. LARRABEE. 

